The film's animation technique combines traditional hand-drawn animation (with digital ink and paint/animation using Toon Boom and Adobe Flash) and extensive use of computer generated imagery.
The film will be presented in theaters, IMAX 3D, and Digital 3D.
Fievel, while in Texas with his parents, meets Mrs. Brisby, and they become friends afterwards, however, Fievel's life takes a turn for the worst when his sisters are captured, and his parents are killed by the evil Cat R. Waul. And Mrs. Brisby decides to become Fievel's adoptive mother while helping him find his sisters, stop Cat R. Waul's plots and return to New York City. This is set in the Lone Ranger and Balto.
Main article: Credits for An American Secret of NIMH
n February 2017, Gary Goldman got an Idea, It was a Mix An American Tail and The Secret of NIMH into the An American Secret of NIMH. In November 11, 2017, It Set Release for November 16, 2018.
Animating will Start on February 1, 2018 to April 5, 2018.
In other languages
- Brazil: Fievel e Sra. Brisby: Os Ratinhos Valente ("Fievel and Mrs. Brisby: The Brave Little Mice")
- France: Fiével et Brisby: Le Nouveau Monde Secret de NIMH ("Fievel and Mrs. Brisby: The New Secret World of NIMH")
- Germany: Feivel und Mrs. Brisby: Die Mauswanderer von NIMH
- Mexico: Fievel y la Señora Brisby: Los Ratoncitos Valiente ("Fievel and Mrs. Brisby: The Brave Little Mice")
- Italy: Un segreto americano di NIMH (An American Secret of NIMH)
- Japan: ニムのアメリカ秘密 (Nimu no Amerika Himitsu)
- Russia: Американский Секрет крыс (Amerikanskiy Sekret krys) An American Secret of NIMH
- Serbia: Арк и госпођа Брисби: Храбри мали мишеви (Ark i gospođa Brisbi : Hrabri mali miševi) Fievel and Mrs. Brisby: The Brave Little Mice
- Spain: Fievel y la Señora Brisby: El Nuevo Mundo Secreto de NIMH ("Fievel and Mrs. Brisby: The New Secret World of NIMH")
- Sweden: Fievel och Fru Brisby: NIMHs Amerikanska hemlighet
- United Kingdom: Fievel and Mrs. Brisby: An American Secret of NIMH
- Thai: หนูน้อยผจญอเมริกาพบแม่หนูผลึกมหัศจรรย์